Is the secondary steam generated by evaporation saturated steam?
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Is the secondary steam generated during the evaporation of the solution saturated steam? The boiling point of a substance increases due to the presence of a non-volatile solvent; this is what is commonly referred to as boiling point elevation. Is the temperature of the secondary vapor the same as that of the liquid phase? What if it’s superheated steam? So how is excessive heat removed? In general, secondary steam is used for direct heating.
Secondary steam is close to saturated steam; with new technologies, it is compressed by a compressor and used as a heat source for primary heating.
Saturated steam and high-pressure steam are used to drive the large compressor to perform work, while the intermediate extracted steam serves as the driving steam for the small compressor
The secondary steam generated during the evaporation of the solution is initially superheated steam, with temperature and pressure equal to those in the solution. However, due to heat dissipation, the superheated steam generated quickly cools down and becomes saturated steam; therefore, it is generally not necessary to remove the degree of superheat. For example, when the steam generated by a steam generator is delivered to the outside, what we know it to be is saturated steam. But in reality, it is also superheated right after coming out of the boiler, usually by about 5 degrees. Later, during the transportation process, it also quickly turns into saturated steam due to heat dissipation. If further heat dissipation occurs, some of the steam will condense into water, but the temperature and pressure of the steam will remain unchanged.
It should be the saturated steam at the flash pressure